/*
 * Copyright (c) 2016, 2018, Oracle and/or its affiliates.
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are
 * permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this list of
 * conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
 * conditions and the following disclaimer in the documentation and/or other materials provided
 * with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors may be used to
 * endorse or promote products derived from this software without specific prior written
 * permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#include "nanolibc.h"

int main(void) {
  char buf1[16];
  char buf2[32];
  int fd;
  ssize_t size;
  struct iovec iov[2];
  int i;
  fd = open("LICENSE", O_RDONLY, 0);
  if (fd < 0) {
    perror("Cannot open file");
    return 1;
  }
  iov[0].iov_base = buf1;
  iov[0].iov_len = sizeof(buf1);
  iov[1].iov_base = buf2;
  iov[1].iov_len = sizeof(buf2);
  size = readv(fd, iov, 2);
  printf("size: %d\n", size);
  if (size < 0) {
    perror("Cannot read file");
    return 1;
  }
  write(STDOUT_FILENO, buf1, size < sizeof(buf1) ? size : sizeof(buf1));
  write(STDOUT_FILENO, buf2, size < sizeof(buf1) ? 0 : (size - sizeof(buf1)));
  close(fd);
  return 0;
}
